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-. S. J. OILLEY & T. F. CARROLL.

BIT STOCK. N0. 361,488. Patented Apr. 19, 1887.

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UNITED STATES PATENT OFFICE.

SEWELL J. oILLnY, on GONIC, AND THOMAS F. CARROLL, on LAOONIA, n. H.

BIT-STOCK.

SPECIFICATION forming part of Letters Patent No. 361,488, dated April 19, 1887.

Application filed December 22, 1886. Serial No. 222,986. (No model.)

- To all whom, it may concern:

Be it known that we, SEWELL J. OILLEY and THOMAS F. CARROLL, citizens of the United States, residing, respectively, at Gonie and Laconia, in the counties of Strafford and Belknap and State of New Hampshire, have invented a new and useful Improvement in Biti Stocks, of which the following is a specification.

Our invention relates to an improvement in bit-stocks; and it consistsin a certain novel construction and arrangement of parts for service, fully set forth hereinafter, and specifically pointed out in the claims.

In the accompanying drawings, Figure 1 is a side view of a bit-stock provided with my improvements. Fig. 2 is a longitudinal section of the same, and Fig. 3 is an enlarged section of the bit-shaft on lineww of Fig. 1. Fig. 4. is a detail view showing the clutch in engagement with the socket-shaft. Fig. 5 is an enlarged detail view of the slotted collar.

Referring to the drawings, in which similar letters denote corresponding parts in all the figures, A is the brace or handle stock, having bends at a and a, provided on the lower.

end with the swivel-head B. Said head consists of the metallic disk b, having the annular flange b on its lower side, said disk being fastened to the handle-stockin any preferred manner, and the wooden cap I) within, and heldin place by the flange b on the disk b.

O is a sleeve .or handle adapted to rotate upon the stock A,and having the integral gearwheel D on its upper end.

E is a hollow casing, one end of which is provided with the enlargement E, which is rigidly secured to the lower end of the stock A, and the other end is provided with the box F, having a circular boss, F, on its lower side. Said box F is provided with a circular opening, f, in the side thereof.

G is a socket-shaft having the socket-head G, of any approved form, thereon.

g is a notch in the upper peripheral edge of the said socket-head, and adapted to receive the vertically-movable tooth H, situated in the notch h in the boss F of the box F.

I is a collar or ferrule movably secured on the boss F bythe pins f above and the lower edge of the box F below, or by any suitable bearings. This ferrule is provided with a diagonal slot, g, to receive a pin, 2', on the tooth H. It will be readily understood that by tn rning the collar or ferrule I to the left the tooth will be caused to ascend and engage in the notch g in the socket-head G.

, K is a horizontal shaft journaled at one end in the box F and at the other end in the enlargement E of the casing E. At one end of the said shaft K is the bevel-pinion L, adapted to engage with the gear-wheel D on the sleeve 0, and at the other end of the said shaft K is a bevel-pinion, M, to engage a pinion, N, on the lower end of the socket-shaft G. It will be seen, therefore, that the stock-shaft will be rotated by turning the sleeve 0 on the stock A through the agency of the gear-wheels D L M N, engaging as described.

In the sleeve 0, which is hollow, as shown, is a spring-pawl, P, rigidly secured at one end to the inside of the said sleeve, and adapted at the other end to engage in the annular grooves O or O in the stock A. When the pawl P is in engagement with the upper groove, 0, as shown in Fig. 1, the gear-wheel D is in engagement with the pinion L, and when the pawl P is in engagement with the groove 0 the gear-wheels D and L are out of engagement. lVhen the said pawl is in engagement with the groove 0, it is only necessary to pull strongly down upon the sleeveO to cause the said pawl to slip out of said groove 0 and into groove 0, thus throwing the gear-wheels, before referred to, out of gear.

It will be understood that the gear-wheels are used to multiply the speed of the bit, so as to cause two, three, four, or more revolutions of the bit to one of the handle. This construction has been used before and is readily understood. It is sometimes desirable, however, to use a tool of this kind as an ordinary bit-stock, and to enable this to be done the gear-wheel D at the upper end of the handle is disengaged from its pinion-wheel by withdrawing the sleeve 0 a sufficient distance from the said pinion to cause such disengagement. Heretofore the means employed to cause said disengagement have been cumbersome and required distinct manipulation of the operator, while with the means which we provide the disengagement can be brought about with a very slight motion of the hand and without the necessity of locking the handlein the disengaged position, as the same motion which withdraws the pawl P from one groove causes it to engage in the other.

\Vhen it is desired. to use the tool as an ordinary bitstock, and the gear-wheel D is withdrawn from engagement with the pinion L, the ferrule I is turned to the left, as explained, and the tooth H is caused to enter the notch g in the sookethead. This looks the said socket-head from rotary motion, and enables a h t in the said socket-head to be turned by the simple motion of the handle around the axis of the stock. In our improved bitstocl; the head propernaniely, the disk b-is pivotally secured on the stock A in any approved manner, and the wooden cap b is forced within the annular flange b,thns covering all of the means of secureinent of the disk to the stock, while the smooth face of the cap is presented as a bearingsurfaee.

It will be observed that all of the gear-wheels and pinions of our improved device are housed or inclosed within boxes or enlargements, and that they are thereby prevented from becoming clogged up by dirt, &c.

Having thus described the construction and operation of our invention and stated its advantages, what we claim, and desire to secure by Letters Patent of the United States, is-

1. In a bitstock, the combination of a stock having the peripheral grooves 0 0 formed at different points intermediate of its length, a

sliding sleeve fitted on the stock and capable of rotary motion thereon, a spring, P, housed within the sleeve and secured at one end thereto, and adapted to enter either of the grooves in the stock to lock the sleeve against cndwise movement at the desired adjustment, and at the same time permit it to rotate freely, a casing rigidly secured at one end to the stock, a counter-shaft housed within the easing and geared to the rotary sleeve, and a socketshaft journaled in the outer end of the casing and geared to the corresponding end of the counter-shaft to be rotated thereby, as and for the purpose described.

2. I11 a bit-stock, the combination of a stock,

a tubular casing rigidly affixed at one end to L the stock and having right-angled tubular boss F at its outer end, a countershaft housed within the tubular casing, a rotary sleeve fitted on the stock and geared to the inner end of the counter-shaft, a socket-shaft journaled in the tubular sleeve and geared to the outer end of the counter-shaft, a collar fitted over the tubular boss and having the diagonal slot, and a sliding tooth fitted in recesses of the socketshaft and tubular boss and having a pin which works in the slot of the collar, whereby when the latter is turned the tooth will be caused to move in the recesses to lock the counter-shalt to the boss or disengage it therefrom, as and for the purpose described.

3. The combination of a stock, a casing atlixed thereto and having a tubular boss at its outer end provided with a recess, a socketshaft journaled in the tubular boss and having a recess which aligns with the corresponding recess in the boss, a collar fitted on the boss and having a diagonal slot, the fixed pins for preventing displacement of the collar, and a sliding tooth fitted in the recesses and having a pin working in the slot of the collar, as and for the purpose set forth.

In testimony that we claim the foregoing as our own we have hereto affixed on 1- signatures in presence of two witnesses.

SEWELL J. OILLEY. THOMAS F. CARROLL. Vit nesses:

HENRY T. GERnrsn, FRANCIS S. SLEEPER. 

